Company Filing History:
Years Active: 2025
Title: Waranyu Dararattanaroj: Innovator in Synthetic Polyisoprene Latex Condoms
Introduction
Waranyu Dararattanaroj is a notable inventor based in Chonburi, Thailand. He has made significant contributions to the field of materials science, particularly in the development of synthetic polyisoprene latex condoms. His innovative approach has led to advancements that enhance the safety and performance of these products.
Latest Patents
Waranyu holds a patent for "Synthetic polyisoprene latex condoms with reduced nitrosamine." This invention involves a synthetic polyisoprene latex emulsion that includes both pre-vulcanization and post-vulcanization compositions. The pre-vulcanization composition utilizes insoluble amorphous sulfur extracted with a zinc dithiocarbamate catalyst at 20° C. This process forms a sulfur chain that is transported to the interior of the synthetic polyisoprene particle, creating a physical attachment of sulfur to active sites. The degree of pre-vulcanization is verified through a swelling index test, which measures the expansion of a cast and dried film of latex in toluene over 20 minutes. The latex emulsion is then vulcanized at temperatures ranging from 90° C. to 120° C. for 3 to 5 minutes. The post-vulcanization composition incorporates accelerators that crosslink the synthetic polyisoprene particles, ensuring uniform curing in both inter-particle and intra-particle regions. This results in high cross-link density and a uniform distribution of double bonds, with zinc segregation at the boundaries of the original particles. The final product exhibits high tensile strength, tensile modulus, elongation, and excellent tear strength, while releasing below 10 ppb of nitrosamines.
Career Highlights
Waranyu is currently employed at Thai Nippon Rubber Industry Public Company Limited, where he continues to innovate in the field of rubber products. His work has not only contributed to the company's success but has also set new standards in the industry.
Collaborations
Waranyu collaborates with talented coworkers, including Pathompong Chupayak and Theeraphol Piachan. Their combined expertise fosters a creative environment that drives innovation and enhances product development.
Conclusion
Waranyu Dararattanaroj is a pioneering inventor whose work in synthetic polyisoprene latex condoms